Finding the Fourth Proportional to 407,840.81, 562,593.62 and 378,974.93
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Solution
The fourth proportional to 407,840.81, 562,593.62 and 378,974.93 is: 522,774.75
Step by Step Solution
- Step 1: Write the proportion equation
407,840.81 : 562,593.62 = 378,974.93 : x - Step 2: Convert to fraction form
407,840.81/562,593.62 = 378,974.93/x - Step 3: Cross multiply
407,840.81x = 562,593.62 × 378,974.93 - Step 4: Simplify right side
407,840.81x = 213,208,875,863.07 - Step 5: Solve for x
x = 213,208,875,863.07/407,840.81 - Step 6: Final answer
x = 522,774.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.